Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-03-08
1977-05-31
Roberts, Elbert L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2603972, C07J 7100
Patent
active
040268829
ABSTRACT:
Syntheses of 3,24R,25- and 3,24S,25-trihydroxy-5,7-cholestadiene 24,25-ketals and alkanoyl derivatives thereof, intermediates in the preparation of the biologically important metabolite and derivative, respectively, of vitamin D.sub.3, are described.
REFERENCES:
patent: 3629242 (1971-12-01), Fried
patent: 3726864 (1973-04-01), Phillipps et al.
Baggiolini Enrico
Partridge, Jr. John Joseph
Uskokovic Milan Radoje
Gould George M.
Hoffmann-La Roche Inc.
Roberts Elbert L.
Welt Samuel L.
Wittekind Raymond R.
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